Bath Fan Vents To Attic

When venting a bathroom exhaust fan make sure to vent the air to the outside rather than into your attic where it can cause mold and mildew to form.

Bath fan vents to attic.

Vent your bath and kitchen exhaust fans through the roof through a special roof hood. The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood. A grille in each bathroom attaches to ducts which then fasten to a y connector at the fan. Options for venting a bathroom exhaust fan include best to worst.

The lowdown on venting your bath fan into an attic is that it can be done but it should terminate on the outside. Bathroom ventilation fan duct routing routing a bath vent duct down out or up through an attic or roof out. Can you vent a bathroom exhaust fan into the soffit vents. Venting through a roof vent or exhausting them in the attic could cause moisture problems and rot.

I would by lying if i told you that it will cause problems it may be totally fine. This article describes routing bath exhaust fan duct upwards through an attic or roof space or downwards through a floor or crawl space. But while you can t have two fans with one vent you can make one fan and one vent serve two bathrooms. This setup requires an in line centrifugal fan mounted in the attic drawing air simultaneously from both bathrooms see photo.

Bathroom exhaust fans perform an important function by removing excess moisture from your home. In fact i have seen numerous houses that haven t yet had signs of mold with the bath fan venting incorrectly. The truth about attic bathroom venting.